#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <string.h>
void mem()
{
	int arr[6] = { 1,2,5,4,8,4 };
	memmove(arr, arr + 3, 3 * sizeof(arr[0]));
	for (int i = 0; i <6; i++)
	{
		printf("%d", arr[i]);
	}
}

int main()
{
	mem();
	return 0;
}